This title appears in the Scientific Report :
2016
Please use the identifier:
http://dx.doi.org/10.1039/C5RA24547H in citations.
Synthesis and rheological behavior of poly(1,2-butylene oxide) based supramolecular architectures
Synthesis and rheological behavior of poly(1,2-butylene oxide) based supramolecular architectures
In this work we present the synthesis of poly(1,2-butylene oxide) (PBO) functionalized with the complementary hydrogen bond forming groups 2,4-diaminotriazine (DAT) and thymine. PBO is a rubbery polymer. Due to its semi-polar nature PBO is expected to suppresses non-directed cluster formation of the...
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Personal Name(s): | Allgaier, J. (Corresponding author) |
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Hövelmann, Claas / Wei, Zhang / Staropoli, Mariapaola / Pyckhout-Hintzen, Wim / Lühmann, Nicole / Willbold, Sabine | |
Contributing Institute: |
Neutronenstreuung; JCNS-1 Analytik; ZEA-3 Neutronenstreuung; ICS-1 |
Published in: | RSC Advances, 6 (2016) 8, S. 6093 - 6106 |
Imprint: |
London
RSC Publishing
2016
|
DOI: |
10.1039/C5RA24547H |
Document Type: |
Journal Article |
Research Program: |
Soft Matter, Health and Life Sciences Jülich Centre for Neutron Research (JCNS) Functional Macromolecules and Complexes |
Publikationsportal JuSER |
In this work we present the synthesis of poly(1,2-butylene oxide) (PBO) functionalized with the complementary hydrogen bond forming groups 2,4-diaminotriazine (DAT) and thymine. PBO is a rubbery polymer. Due to its semi-polar nature PBO is expected to suppresses non-directed cluster formation of the supramolecular groups but not influence their directed interactions. For the synthesis of backbone functionalized polymers we developed a procedure which allowed randomly copolymerizing BO with 1,2-epoxy-7-octene using anionic ring opening polymerization with potassium tert-butanolate as initiator. The vinyl groups were converted to OH-groups by oxidation. In addition, PBO with one alcoholic end group was obtained by homopolymerization of BO. For the variant with OH-groups at both chain ends a procedure was developed which was based on the cleavage of the tert-butyl initiator group. In all the polymers the alcohol groups were basically quantitatively transformed into NH2-groups. DAT and thymine functionalities were attached to the NH2-groups again in almost quantitative conversion. All reaction steps were monitored by 1H-NMR using pyridine-d5 as solvent. This method allowed determining the conversions of the different synthesis steps with high precision. The materials were examined in linear rheology in order to study the effect of the hydrogen-bonds on the dynamics of the resulting supramolecular structures. The results corroborate the exclusive existence of directed interactions between the supramolecular groups. |